Upgrades to Launch4j 3.50

[lukaszlenart]

Please see the docs for changes of the configuration options:

• Removed <bundledJreAsFallback>, path search is always first and registry search second in order to improve compatibility with modern runtimes.
• Replaced <bundledJre64Bit> and <runtimeBits> with <requires64Bit> which works during path and registry search.
• Replaced <jdkPreference> with <requiresJdk> which works during path and registry search.
• Replaced <bundledJreErr> with <jreNotFoundErr>.
• <minVersion> and <maxVersion> are now used during path and registry search, previously they were only checked during registry search.

The plugin will show warnings when these options are still used:

[WARNING] <bundledJreAsFallback/> has been removed! It has no effect!
[WARNING] <bundledJre64Bit/> is deprecated, use <requires64Bit/> instead!
[WARNING] <runtimeBits/> is deprecated, use <requires64Bit/> instead!
[WARNING] <jdkPreference/> is deprecated, use <requiresJdk/> instead!
[WARNING] <bundledJreErr/> is deprecated, use <jreNotFoundErr/> instead!

Closes #199

[lukaszlenart]

I have tested this change using this project (even using Docker maven:3.8-openjdk-8) and everything is fine when running on the latest Maven version.